default-assignment-operator.cpp revision 1c0c52cb8019f7d0b4ba3e190593e24a5bc60533 
1// RUN: clang-cc -fsyntax-only -verify %s
2
3class Base { // expected-error {{cannot define the implicit default assignment operator for 'class Base'}} \
4             // expected-note {{synthesized method is first required here}}
5  int &ref;  // expected-note {{declared at}}
6};
7
8class X  : Base {  // // expected-error {{cannot define the implicit default assignment operator for 'class X'}}
9public:
10  X();
11  const int cint;  // expected-note {{declared at}}
12};
13
14struct Y  : X {
15  Y();
16  Y& operator=(const Y&);
17  Y& operator=(volatile Y&);
18  Y& operator=(const volatile Y&);
19  Y& operator=(Y&);
20};
21
22class Z : Y {};
23
24Z z1;
25Z z2;
26
27// Test1
28void f(X x, const X cx) {
29  x = cx;	// expected-note {{synthesized method is first required here}}
30  x = cx;
31  z1 = z2;
32}
33
34// Test2
35class T {};
36T t1;
37T t2;
38
39void g()
40{
41  t1 = t2;
42}
43
44// Test3
45class V {
46public:
47  V();
48  V &operator = (V &b);
49};
50
51class W : V {};
52W w1, w2;
53
54void h()
55{
56  w1 = w2;
57}
58
59// Test4
60
61class B1 {
62public:
63  B1();
64  B1 &operator = (B1 b);
65};
66
67class D1 : B1 {};
68D1 d1, d2;
69
70void i()
71{
72	d1 = d2;
73}
74
75// Test5
76
77class E1 { // expected-error{{cannot define the implicit default assignment operator for 'class E1', because non-static const member 'a' can't use default assignment operator}}
78public:
79  const int a; // expected-note{{declared at}}
80  E1() : a(0) {}
81
82};
83
84E1 e1, e2;
85
86void j()
87{
88  e1 = e2; // expected-note{{synthesized method is first required here}}
89}
90
91